diff options
| author | Marek Vasut <marex@denx.de> | 2016-12-01 04:06:33 +0300 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2016-12-01 07:51:57 +0300 |
| commit | b5b838f1a726e9ab7eea505740e8169b55e90ed6 (patch) | |
| tree | 30c1d1b44a48d97813e9595f66850d89363992a9 /drivers/mmc/mmc_legacy.c | |
| parent | ce9eca9438d69306441060e7ac90e45d47882f34 (diff) | |
| download | u-boot-b5b838f1a726e9ab7eea505740e8169b55e90ed6.tar.xz | |
mmc: Tinification of the mmc code
Add new configuration option CONFIG_MMC_TINY which strips away all
memory allocation within the MMC code and code for handling multiple
cards. This allows extremely space-constrained SPL code use the MMC
framework.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers/mmc/mmc_legacy.c')
| -rw-r--r-- | drivers/mmc/mmc_legacy.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/mmc/mmc_legacy.c b/drivers/mmc/mmc_legacy.c index 25361d10f6..bdf9d984dd 100644 --- a/drivers/mmc/mmc_legacy.c +++ b/drivers/mmc/mmc_legacy.c @@ -13,6 +13,7 @@ static struct list_head mmc_devices; static int cur_dev_num = -1; +#if !CONFIG_IS_ENABLED(MMC_TINY) struct mmc *find_mmc_device(int dev_num) { struct mmc *m; @@ -62,6 +63,7 @@ void mmc_do_preinit(void) mmc_start_init(m); } } +#endif void mmc_list_init(void) { @@ -109,6 +111,35 @@ void print_mmc_devices(char separator) void print_mmc_devices(char separator) { } #endif +#if CONFIG_IS_ENABLED(MMC_TINY) +static struct mmc mmc_static = { + .dsr_imp = 0, + .dsr = 0xffffffff, + .block_dev = { + .if_type = IF_TYPE_MMC, + .removable = 1, + .devnum = 0, + .block_read = mmc_bread, + .block_write = mmc_bwrite, + .block_erase = mmc_berase, + .part_type = 0, + }, +}; + +struct mmc *mmc_create(const struct mmc_config *cfg, void *priv) +{ + struct mmc *mmc = &mmc_static; + + mmc->cfg = cfg; + mmc->priv = priv; + + return mmc; +} + +void mmc_destroy(struct mmc *mmc) +{ +} +#else struct mmc *mmc_create(const struct mmc_config *cfg, void *priv) { struct blk_desc *bdesc; @@ -157,6 +188,7 @@ void mmc_destroy(struct mmc *mmc) /* only freeing memory for now */ free(mmc); } +#endif static int mmc_select_hwpartp(struct blk_desc *desc, int hwpart) { |